Locomotive wedge bolt nut lock device



Feb. 13, 1940, D. LOVE 2,190,076

LOCOMOTIVE WEDGE BOLT NUT LOCK DEVICE Filed May 5, 1938 flizmoni Love IPatented Feb. 13, 1940 'UNITED STATES LOCOMOTIVE WEDGE BOLT NUT LOCKDEVICE i t l' Dumont Love, St Augustine, Fla. I Application May 5, 1938,Serial No. 206,287

g 3 Claims. (01.151-57) the opening 2 and has a S101; 511 through whichi This invention relates to improvements in nut locks and pertainsparticularly to locking means for wedge bolt nuts of locomotives. i

The present invention has for its primary ohject to provide an improvednutflock for bolts employed in locomotives for maintaining the drivingbox wedge in position whereby the se- Vere vibrations encountered by theengine structure in road service will be inefiective to loosen the nutand the driving box wedge.

Another object of the invention is to provide an, improved nut lockingmeans for the specific use above referred to which will be efiectiveand. does not require any mutilation of the wedge bolt nut in order thatthe locking means may be connected therewith; j

Still another object of the invention is to provide an improved wedgebolt nut lock securing means which may be installed or removed 2o in aminimum of time and without requiring the use of tools otherthan awrench, v

The invention will be best understood from a consideration of thefollowing detailed description taken in connection with the accompany- 5ring drawing forming part of this specification,

with the understanding, however, that the invention is not to beconfined to any strict conformity with the showing of the drawing butmay be changed or modified so longas such 0 changes or modificationsmark no material departure from the salient features of the invention asexpressed in the appended claims.

In the drawing:

Figure l is a view in elevation of a portion of a locomotive frameshowing the application thereto of the nut lock securing deviceembodying the present invention, 1 the frame having mounted therein thedriving box and securing wedge.

40 Figure 2 is a sectionon the line 2-2of Figure l. b i i Figure 3 is ahorizontal'section on the line 33of Figure 2. I

Figure 4 is a view looking at the open end 15 of the nut securing'unit,per se, showing the leg connecting member.

Referring now more specifically tothe draw fl ing, the numeral igenerally designates a portion of a locomotive frame having the area 250 for the reception of a driving box 3. Such'boxes are secured inposition by means of a wedge 4 interposed between a side of the box andan inclined wall of the open area 2, in the manner illustrated and thelower part of the frame has 55 secured thereto the plate 5 which extendsacross passes a bolt 6, the upper end of which bolt is securely fastenedto the bottom edge of the wedge c to maintain the same tightly inposition so asto prevent longitudinal movement of the box 3.

Thelower face of the plate 5 has an auxiliary plate 1 extendinglongitudinally thereof across the area through which the bolt 6 passes,this auxiliary plate having an opening 8 for the bolt 6 and having itsends offset as indicated at 9, m

and secured to the plate by the bolts l0 and H.

The offset ends 9 of the auxiliary plate! thus serve to separate themajor portion of this plate from the plate 5 providing an area betweenthe two plates for a locking nut i2 which is threaded 15 upon the bolt 6and bears against the top of the plate I. Beneath the auxiliary plate 1are the securing and locking nuts l3 and M respec- 1 i tively, which arethreaded upon the bolt, the securing nut engaging the bottom side of theplate l and the nut I4 serving to lock the securing nut againstmovement.

The nut securing device embodying the present invention is adapted toengage the nuts I2 and l3,as shown in Figure 2, and this device 26 whichis indicated as a wholeby the numeral I5 is in the form of a U-shapedclip which is made from a strip of band or plate material which is bentintermediate its ends to form the yoke portion l6 and the spacedparallel legs I1 30 which are separated suiiiciently to snugly receivetherebetween the plate 1. Each of the legs I! is provided with arelatively wide recess l8 opening through its free end and extendinglongitudinally thereof to form the furcations IS. The recesses 1 it areof a Width to snugly receive the nuts l2 and I3 so that when theU-shaped clip member is slipped onto the auxiliary plate 1 so that thelegs I1 will extend across this plate, the nuts i2 and I3 will belocated in the recesses of the legs and held by the furcations [9against rotation. i i t The furcations IQ of the two legs H are providedwith apertures 26 adjacent their free ends and since the length of thelegs H is materially 5 greater than the width of the plate 1 acrosswhich they extend, it will be seen that when the clip is placed on theplate I so as to bring the yoke. portion l6 against a side edge of theplate, the apertured ends of the furcations of the legs will be disposedbeyond the opposite side edge of the cations of the top one of the legsI! so that the ends of the key legs 2| will be directed downwardly. Thekey legs thus extend across the plate 1 between the furcations of theupper and lower legs of the clip member to prevent withdrawal of theclip member and the accidental displacement of the key may be preventedby bending-the lower ends of the leg portions 2|" thereof slightlylaterally, as shown in Figure 1, so that the key cannot be easilywithdrawn.

From the foregoing, it will be readily apparent that the nut securingdevice herein described is of a character to be easily and quicklyplaced into or removed from working position and that it is notnecessary to alter the construction of or mutilate the nuts I2 or l3 inany manner in order that the nut securing device may be used.

What is claimed is: i

1. In locomotive running gear, a bearing wedge bolt passing through twoopposed plates and carrying two nuts disposed one above and one belowone of the plates, a locking means for the nut lying between the platesconsisting of a substantially U -shaped member having a length greaterthan the width of the said one plate, the legs of the'member beingspaced to receive said one plate therebetween, each of said legs having'a slot formed therein from and opening through the end edge thereof tosnugly receive one of nuts, and means connecting the ends of the legs ofthe member across the said one plate;

2. In locomotive running gear, a bearing wedge bolt passing through twoopposed plates and carrying two nuts disposed one above and one belowone of the plates, a locking means for the nut lying between the platesconsisting of a substantially U-shaped member having a length greaterthan the Width of the said one plate, the

legs of the member being spaced to receive said one plate therebetween,each of said legs having a slot formed therein from and opening throughthe end edge thereof to snugly receive one of said nuts, and a U-shapedconnector between the legs of said member, having two legs and aconnectsaid legs having a slot formed therein from and opening throughthe end edge thereof to ive one of said nuts, and means connecting ti oithe member together and extending across and securing the member againstremoval i'zom the said one plate.

DUMONT LOVE.

